Attaching wires to bell telegraphs



H. HOCHSTRASSER- Hanging Bells.

Patented Sept. 8,1857.

N. FETERVS. PbolwLilMmpber, Washingwn. D. C,

UNITED STATES PATENT OFFICE.

HENRY HOCHSTRASSER, OF PHILADELPHIA, PENNSYLVANIA.

ATTACHING- WIRES TO BELL TELEGRAPHS.

Specification of Letters Patent No. 18,147, dated September 8, 1857.

To all whom it may concern:

Be itknown that I, HENRY HOCHSTRASSER, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented a new and ImprovedMode of Attaching Wires to Bell Telegraphs, Annunciators, Watch-Clocks,&c.; and I do hereby declare that the following is a full and exactdescription thereof, reference being had to the accompanying drawing andto the letters of reference marked thereon.

The nature of my invention consists in having, (or placing) intermediatesprings at any point between the machine, or parts of the machine, to bemoved, and the purchase crank, or place of pulling (see drawing, letterA) so that if the wires are pulled,

or moved, farther than the machine will admit the strain will come uponthe intermediate springs, and not on the cranks, the wires or any partof the machine which is to be moved.

It is well known that the levers or cranks, Within, and attached to Belltelegraphs, watch clocks, &c., are required to be moved a certaindefinite distance, and are not efiective until moved to the full extentof that distance, and to prevent injury to the work by overpulling, ithas been customary to place a stop at the purchase crank (letter B), un-

-' der those conditions if the wires are contracted by cold or stretchedand slackened by constant pulling or other causes, they becomeinoperative, difficulties which my invention is intended to obviate.With watch clocks, if the preceding levers are not pulled first, thesucceeding ones are immovable, and consequently must result in injury tosome part of the work, which indeed has often been the case. By the useof the intermediate springs all injury from that source is obviated.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation. Instead of asheretofore attaching the wires directly to the machine, I connect oneend of a spiral spring, or its equivalent, (letter C) to the machine, orpart to be'moved, at any point intermediate between the machine andpurchase, crank, or pull, and connect the other end of the spring to thewire leading from the pull, which spring must be stronger, stiffer, andless yielding than the spring in the machine (D) to which'it may beconnected, and consequently will yield only when the wire is pulled ordrawn farther than the machine to which connected will admit. It isevident that no injury by overpulling can result under those conditions.

I do not claim any improvement, in this specification, on any machine towhich the intermediate springs may be attached.

What I do claim and desire to secure by Letters Patent is- Theintermediate spring or its equivalent substantially as herein described.

HENRY HOCHSTRASSER.

Witnesses at signing:

DENNIS BREAD, lVILLIAMs OGER.

